The National Defence Headquarters (or NDHQ) is the headquarters for Canada

Canada

Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

's Department of National Defence

Department of National Defence (Canada)

The Department of National Defence , frequently referred to by its acronym DND, is the department within the government of Canada with responsibility for all matters concerning the defence of Canada...

 (DND) and the Canadian Forces

Canadian Forces

The Canadian Forces , officially the Canadian Armed Forces , are the unified armed forces of Canada, as constituted by the National Defence Act, which states: "The Canadian Forces are the armed forces of Her Majesty raised by Canada and consist of one Service called the Canadian Armed Forces."...

. NDHQ actually comprises a collection of offices spread in buildings across the National Capital Region

National Capital Region (Canada)

The National Capital Region, also referred to as Canada's Capital Region, is an official federal designation for the Canadian capital of Ottawa, Ontario, the neighbouring city of Gatineau, Quebec, and surrounding urban and rural communities....

, however it is most commonly identified with the Major-General George R Pearkes Building at 101 Colonel By Drive

Colonel By Drive

Colonel By Drive is an long scenic parkway in Ottawa, Ontario, Canada. It runs along the Rideau Canal from the end of Sussex Drive at Rideau Street. It then continues south and west to Hog's Back Road, winding through several residential areas and going past Dow's Lake and Carleton University...

 in Ottawa

Ottawa

Ottawa is the capital of Canada, the second largest city in the Province of Ontario, and the fourth largest city in the country. The city is located on the south bank of the Ottawa River in the eastern portion of Southern Ontario...

.

Falling under the Minister of National Defence

Minister of National Defence (Canada)

The Minister of National Defence is a Minister of the Crown; the Canadian politician within the Cabinet of Canada responsible for the Department of National Defence which oversees the Canadian Forces....

, NDHQ includes the office of the Deputy Minister

Deputy Minister (Canada)

In Canada, a deputy minister is the senior civil servant in a government department. He or she takes political direction from an elected minister. Responsibility for the department's day-to-day operations, budget and program development lie with the deputy minister...

 (DM), the office of the Chief of the Defence Staff

Chief of the Defence Staff (Canada)

The Chief of the Defence Staff is the second most senior member of the Canadian Forces, and heads the Armed Forces Council, having primary responsibility for command, control, and administration of the forces, as well as military strategy, plans, and requirements...

 (CDS), the office of the Vice Chief of the Defence Staff, and all the "level 1" headquarters and staffs:

• Reporting to the CDS are the headquarters of all the Canadian Forces' force generating and operational commands:
  • Royal Canadian Navy
    Royal Canadian Navy
    The history of the Royal Canadian Navy goes back to 1910, when the naval force was created as the Naval Service of Canada and renamed a year later by King George V. The Royal Canadian Navy is one of the three environmental commands of the Canadian Forces...
    
    
  • Canadian Army
  • Royal Canadian Air Force
    Royal Canadian Air Force
    The history of the Royal Canadian Air Force begins in 1920, when the air force was created as the Canadian Air Force . In 1924 the CAF was renamed the Royal Canadian Air Force and granted royal sanction by King George V. The RCAF existed as an independent service until 1968...
    
    
  • Canada Command
    Canada Command
    Canada Command is one of the seven commands of the Canadian Forces. Stood up on February 1, 2006, it is responsible for all domestic operations and national security missions; as an operational command, it works closely with the environment commands Canada Command (CANADACOM) (in French :...
    
    
  • Canadian Expeditionary Force Command
    Canadian Expeditionary Force Command
    Canadian Expeditionary Force Command is an operational element of the Canadian Forces for operations outside of Canada....
    
    
  • Canadian Special Operations Forces Command
    Canadian Special Operations Forces Command
    Canadian Special Operations Forces Command , is a command of the Canadian Forces...
    
    
  • Canadian Operational Support Command
    Canadian Operational Support Command
    The Canadian Operational Support Command is one of seven commands of the Canadian Forces...
    
    

• Reporting to the DM are several Assistant Deputy Ministers (ADM):
  • ADM (Policy)
  • ADM (Science and Technology)
  • ADM (Materiel)
  • ADM (Finance and Coorporate Services)
  • ADM (Infrastructure and Environment)
  • ADM (Information Management)
  • ADM (Public Affairs)